501 / 1575
WHEEL AND TYRES
52
D. TYRE VIBRATION DIAGNOSIS
1. Visually inspect tyres, wheels/rims, and vehicle
for uneven wear, damaged wheels/rims, or
vehicle component damage. Replace or adjust
as required. Check wheel mounting to hub,
adjust torque of wheel bolt to the specified
value.
2. Make sure that tyres are inflated with specified
pressure and suspension is working correctly.
3. Check for proper tyre mounting on the
wheel/rim. The tyre fitting line should be
concentric with the rim flange. The yellow or red
mark on the tyre should be oriented to the rim
correctly. (
Refer Matched Tyres and Wheel
Rims given in this section
)
4. Test drive vehicle on a smooth road surface
and diagnose symptoms.
5. Check tyre wheel/rim assembly balance. Adjust
as required. If unable to balance, completely
deflate tyre, unseat tyre beads, and rotate tyre
180 degrees on the wheel/rim. Rebalance tyre
and wheel/rim assembly and test drive vehicle.
6. If vibration is not eliminated, measure tyre and
wheel/rim assembly for excessive lateral or
radial run out. Replace as required. Rebalance
tyre and wheel/rim assembly and test drive
vehicle.